安装python3.8

yum -y groupinstall "Development tools"
yum install gcc patch libffi-devel python-devel  zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel -y
yum update -y

wget --no-check-certificate https://www.python.org/ftp/python/3.8.9/Python-3.8.9.tgz
tar xf Python-3.8.9.tgz
cd Python-3.8.9/

./configure --prefix=/usr/local/python38
make && make install

# 在/etc/profile最后一行添加
export PATH=$PATH:/usr/local/python38/bin
source /etc/profile